<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		
	</head>
	<body>
		<script type="text/javascript">

		var str1 = "javascript";

		var str2 = "I like \str1,I like ${str1}"+`I like str1?I like \str1?I like ${str1}`;

		document.write (str2);

		</script>
	</body>
</html>